RE: Limits of SQL SET variable

Thank you Charles.
Like Jimmy Buffet said: 'like the jitter-bug, it was so simple, it plum evaded me'

-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Charles Wilt
Sent: Wednesday, September 10, 2014 8:31 AM
To: Midrange Systems Technical Discussion
Subject: Re: Limits of SQL SET variable

All you need is

INSERT INTO liba/doc#file
SELECT loc, petable.enddate, outlet,
docfunc(:loc, :outlet, :enddate)
FROM libb/sales JOIN libx/petable
ON sales.year = petable.year
AND sales.period = petable.period
GROUP BY petable.enddate,loc,outlet
ORDER BY 1,2,3

Optionally, you could have
docfunc(:loc, :outlet, :enddate) as docnum

To give the result column a name, but the names don't matter to the insert.
Only size/type.

Charles

Charles


On Wed, Sep 10, 2014 at 10:11 AM, Gary Thompson <gthompson@xxxxxxxxxxx>
wrote:

First, Thank you.
I'm trying to avoid my typical use of an SQL cursor in a program to
loop through data to get document numbers for sales commissions (my
project for today).

Here's a (crude) example of my goal:

-- Load Document # file using SQL Function libf/docfunc INSERT INTO
liba/doc#file SELECT loc, petable.enddate, outlet,
SET docnum = docfunc(:loc, :outlet, :enddate)
FROM libb/sales JOIN libx/petable
ON sales.year = petable.year
AND sales.period = petable.period GROUP BY
petable.enddate,loc,outlet ORDER BY 1,2,3 ;

From what I know, SET cannot be used this way.
My read of the 7.1 SQL reference says SET is only used to set a host
variable ?

SQL Function docfunc returns a Document Number given: Location,
Outlet and Fiscal Period End Date Document Number identifies a
structure containing sales commission detail for a fiscal period.
petable stores fiscal period detail




-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of
rob@xxxxxxxxx
Sent: Wednesday, September 10, 2014 4:53 AM
To: Midrange Systems Technical Discussion
Subject: Re: Limits of SQL SET variable

Let's begin with the end in mind. What is it you are trying to do?


Rob Berendt
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Garrett, IN 46738
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From: Gary Thompson <gthompson@xxxxxxxxxxx>
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx>
Date: 09/10/2014 01:40 AM
Subject: Limits of SQL SET variable
Sent by: "MIDRANGE-L" <midrange-l-bounces@xxxxxxxxxxxx>



My limited experience using SET and reading DB2 for i SQL Reference
7.1 leads me to conclude SET can only update the value of a 'host' variable ?

And that SET cannot be used within an SQL Select ?

But, maybe, can be used within an embedded SQL Select where SET is in
a subselect or common table expression ?
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